Lines Matching +full:vref +full:- +full:buffered
1 // SPDX-License-Identifier: GPL-2.0-only
4 * Copyright (C) 2008-2010 Jonathan Cameron
7 * Copyright (C) 2002-2004 Stefan Eletzhofer
51 /* think about including max11600 etc - more settings */
58 /* max1363 only - though don't care on others.
79 /* max123{6-9} only */
82 /* max1363 only - merely part of channel selects or don't care for others */
87 /* max1363 strictly 0x06 - but doesn't matter */
94 * struct max1363_mode - scan mode information
122 * struct max1363_chip_info - chip specifc information
144 * struct max1363_state - driver instance specific data
158 * @vref: Reference voltage regulator
181 struct regulator *vref; member
303 for (i = 0; i < ci->num_modes; i++) in max1363_match_mode()
305 max1363_mode_table[ci->mode_list[i]]. in max1363_match_mode()
308 return &max1363_mode_table[ci->mode_list[i]]; in max1363_match_mode()
340 u8 tx_buf[2] = { st->setupbyte, st->configbyte }; in max1363_write_basic_config()
342 return st->send(st->client, tx_buf, 2); in max1363_write_basic_config()
347 st->configbyte &= ~(MAX1363_CHANNEL_SEL_MASK in max1363_set_scan_mode()
350 st->configbyte |= st->current_mode->conf; in max1363_set_scan_mode()
364 struct i2c_client *client = st->client; in max1363_read_single_chan()
369 mutex_lock(&st->lock); in max1363_read_single_chan()
376 * Also, cannot read directly if buffered capture enabled. in max1363_read_single_chan()
378 if (st->monitor_on) { in max1363_read_single_chan()
379 ret = -EBUSY; in max1363_read_single_chan()
384 if (st->current_mode != &max1363_mode_table[chan->address]) { in max1363_read_single_chan()
386 st->current_mode = &max1363_mode_table[chan->address]; in max1363_read_single_chan()
391 if (st->chip_info->bits != 8) { in max1363_read_single_chan()
393 data = st->recv(client, rxbuf, 2); in max1363_read_single_chan()
399 ((1 << st->chip_info->bits) - 1); in max1363_read_single_chan()
402 data = st->recv(client, rxbuf, 1); in max1363_read_single_chan()
412 mutex_unlock(&st->lock); in max1363_read_single_chan()
434 *val = st->vref_uv / 1000; in max1363_read_raw()
435 *val2 = st->chip_info->bits; in max1363_read_raw()
438 return -EINVAL; in max1363_read_raw()
496 .datasheet_name = "AIN"#num"-AIN"#num2, \
688 return sprintf(buf, "%d\n", max1363_monitor_speeds[st->monitor_speed]); in max1363_monitor_show_freq()
704 return -EINVAL; in max1363_monitor_store_freq()
711 return -EINVAL; in max1363_monitor_store_freq()
713 mutex_lock(&st->lock); in max1363_monitor_store_freq()
714 st->monitor_speed = i; in max1363_monitor_store_freq()
715 mutex_unlock(&st->lock); in max1363_monitor_store_freq()
734 *val = st->thresh_low[chan->channel]; in max1363_read_thresh()
736 *val = st->thresh_high[chan->channel]; in max1363_read_thresh()
747 switch (st->chip_info->bits) { in max1363_write_thresh()
750 return -EINVAL; in max1363_write_thresh()
754 return -EINVAL; in max1363_write_thresh()
760 st->thresh_low[chan->channel] = val; in max1363_write_thresh()
763 st->thresh_high[chan->channel] = val; in max1363_write_thresh()
766 return -EINVAL; in max1363_write_thresh()
798 u8 tx[2] = { st->setupbyte, in max1363_event_handler()
799 MAX1363_MON_INT_ENABLE | (st->monitor_speed << 1) | 0xF0 }; in max1363_event_handler()
801 st->recv(st->client, &rx, 1); in max1363_event_handler()
805 st->send(st->client, tx, 2); in max1363_event_handler()
816 int number = chan->channel; in max1363_read_event_config()
818 mutex_lock(&st->lock); in max1363_read_event_config()
820 val = (1 << number) & st->mask_low; in max1363_read_event_config()
822 val = (1 << number) & st->mask_high; in max1363_read_event_config()
823 mutex_unlock(&st->lock); in max1363_read_event_config()
837 /* transition to buffered capture is not currently supported */ in max1363_monitor_mode_update()
838 st->setupbyte &= ~MAX1363_SETUP_MONITOR_SETUP; in max1363_monitor_mode_update()
839 st->configbyte &= ~MAX1363_SCAN_MASK; in max1363_monitor_mode_update()
840 st->monitor_on = false; in max1363_monitor_mode_update()
845 st->setupbyte |= MAX1363_SETUP_MONITOR_SETUP; in max1363_monitor_mode_update()
846 st->configbyte &= ~(MAX1363_CHANNEL_SEL_MASK in max1363_monitor_mode_update()
849 st->configbyte |= MAX1363_CONFIG_SCAN_MONITOR_MODE; in max1363_monitor_mode_update()
850 if ((st->mask_low | st->mask_high) & 0x0F) { in max1363_monitor_mode_update()
851 st->configbyte |= max1363_mode_table[s0to3].conf; in max1363_monitor_mode_update()
853 } else if ((st->mask_low | st->mask_high) & 0x30) { in max1363_monitor_mode_update()
854 st->configbyte |= max1363_mode_table[d0m1to2m3].conf; in max1363_monitor_mode_update()
857 st->configbyte |= max1363_mode_table[d1m0to3m2].conf; in max1363_monitor_mode_update()
864 ret = -ENOMEM; in max1363_monitor_mode_update()
867 tx_buf[0] = st->configbyte; in max1363_monitor_mode_update()
868 tx_buf[1] = st->setupbyte; in max1363_monitor_mode_update()
869 tx_buf[2] = (st->monitor_speed << 1); in max1363_monitor_mode_update()
878 if (st->mask_low & (1 << j)) { in max1363_monitor_mode_update()
879 tx_buf[i] = (st->thresh_low[j] >> 4) & 0xFF; in max1363_monitor_mode_update()
880 tx_buf[i + 1] = (st->thresh_low[j] << 4) & 0xF0; in max1363_monitor_mode_update()
888 if (st->mask_high & (1 << j)) { in max1363_monitor_mode_update()
890 (st->thresh_high[j] >> 8) & 0x0F; in max1363_monitor_mode_update()
891 tx_buf[i + 2] = st->thresh_high[j] & 0xFF; in max1363_monitor_mode_update()
903 ret = st->send(st->client, tx_buf, len); in max1363_monitor_mode_update()
907 ret = -EIO; in max1363_monitor_mode_update()
918 tx_buf[0] = st->setupbyte; in max1363_monitor_mode_update()
919 tx_buf[1] = MAX1363_MON_INT_ENABLE | (st->monitor_speed << 1) | 0xF0; in max1363_monitor_mode_update()
920 ret = st->send(st->client, tx_buf, 2); in max1363_monitor_mode_update()
924 ret = -EIO; in max1363_monitor_mode_update()
928 st->monitor_on = true; in max1363_monitor_mode_update()
938 * Scan 0...3, 0-1,2-3 and 1-0,3-2
947 ret = -EBUSY; in __max1363_check_event_mask()
952 ret = -EBUSY; in __max1363_check_event_mask()
956 ret = -EBUSY; in __max1363_check_event_mask()
968 int number = chan->channel; in max1363_write_event_config()
973 mutex_lock(&st->lock); in max1363_write_event_config()
975 unifiedmask = st->mask_low | st->mask_high; in max1363_write_event_config()
979 st->mask_low &= ~(1 << number); in max1363_write_event_config()
985 st->mask_low |= (1 << number); in max1363_write_event_config()
989 st->mask_high &= ~(1 << number); in max1363_write_event_config()
995 st->mask_high |= (1 << number); in max1363_write_event_config()
999 max1363_monitor_mode_update(st, !!(st->mask_high | st->mask_low)); in max1363_write_event_config()
1001 mutex_unlock(&st->lock); in max1363_write_event_config()
1030 st->current_mode = max1363_match_mode(scan_mask, st->chip_info); in max1363_update_scan_mode()
1031 if (!st->current_mode) in max1363_update_scan_mode()
1032 return -EINVAL; in max1363_update_scan_mode()
1052 /* max1363 and max1368 tested - rest from data sheet */
1438 st->setupbyte = MAX1363_SETUP_INT_CLOCK in max1363_initial_setup()
1442 if (st->vref) in max1363_initial_setup()
1443 st->setupbyte |= MAX1363_SETUP_AIN3_IS_REF_EXT_TO_REF; in max1363_initial_setup()
1445 st->setupbyte |= MAX1363_SETUP_POWER_UP_INT_REF in max1363_initial_setup()
1449 st->setupbyte = MAX1363_SETUP_BYTE(st->setupbyte); in max1363_initial_setup()
1450 st->current_mode = &max1363_mode_table[st->chip_info->default_mode]; in max1363_initial_setup()
1451 st->configbyte = MAX1363_CONFIG_BYTE(st->configbyte); in max1363_initial_setup()
1462 masks = devm_kzalloc(&indio_dev->dev, in max1363_alloc_scan_masks()
1465 st->chip_info->num_modes + 1), in max1363_alloc_scan_masks()
1468 return -ENOMEM; in max1363_alloc_scan_masks()
1470 for (i = 0; i < st->chip_info->num_modes; i++) in max1363_alloc_scan_masks()
1472 max1363_mode_table[st->chip_info->mode_list[i]] in max1363_alloc_scan_masks()
1475 indio_dev->available_scan_masks = masks; in max1363_alloc_scan_masks()
1483 struct iio_dev *indio_dev = pf->indio_dev; in max1363_trigger_handler()
1488 unsigned long numvals = bitmap_weight(st->current_mode->modemask, in max1363_trigger_handler()
1492 if (st->chip_info->bits != 8) in max1363_trigger_handler()
1496 if (indio_dev->scan_timestamp) { in max1363_trigger_handler()
1499 d_size += sizeof(s64) - (d_size % sizeof(s64)); in max1363_trigger_handler()
1511 if (st->chip_info->bits != 8) in max1363_trigger_handler()
1512 b_sent = st->recv(st->client, rxbuf, numvals * 2); in max1363_trigger_handler()
1514 b_sent = st->recv(st->client, rxbuf, numvals); in max1363_trigger_handler()
1524 iio_trigger_notify_done(indio_dev->trig); in max1363_trigger_handler()
1588 struct regulator *vref; in max1363_probe() local
1590 indio_dev = devm_iio_device_alloc(&client->dev, in max1363_probe()
1593 return -ENOMEM; in max1363_probe()
1597 mutex_init(&st->lock); in max1363_probe()
1598 ret = devm_regulator_get_enable(&client->dev, "vcc"); in max1363_probe()
1602 st->chip_info = device_get_match_data(&client->dev); in max1363_probe()
1603 if (!st->chip_info) in max1363_probe()
1604 st->chip_info = &max1363_chip_info_tbl[id->driver_data]; in max1363_probe()
1605 st->client = client; in max1363_probe()
1607 st->vref_uv = st->chip_info->int_vref_mv * 1000; in max1363_probe()
1608 vref = devm_regulator_get_optional(&client->dev, "vref"); in max1363_probe()
1609 if (!IS_ERR(vref)) { in max1363_probe()
1612 ret = regulator_enable(vref); in max1363_probe()
1616 ret = devm_add_action_or_reset(&client->dev, max1363_reg_disable, vref); in max1363_probe()
1620 st->vref = vref; in max1363_probe()
1621 vref_uv = regulator_get_voltage(vref); in max1363_probe()
1623 return -EINVAL; in max1363_probe()
1625 st->vref_uv = vref_uv; in max1363_probe()
1628 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { in max1363_probe()
1629 st->send = i2c_master_send; in max1363_probe()
1630 st->recv = i2c_master_recv; in max1363_probe()
1631 } else if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE) in max1363_probe()
1632 && st->chip_info->bits == 8) { in max1363_probe()
1633 st->send = max1363_smbus_send; in max1363_probe()
1634 st->recv = max1363_smbus_recv; in max1363_probe()
1636 return -EOPNOTSUPP; in max1363_probe()
1643 indio_dev->name = id->name; in max1363_probe()
1644 indio_dev->channels = st->chip_info->channels; in max1363_probe()
1645 indio_dev->num_channels = st->chip_info->num_channels; in max1363_probe()
1646 indio_dev->info = st->chip_info->info; in max1363_probe()
1647 indio_dev->modes = INDIO_DIRECT_MODE; in max1363_probe()
1652 ret = devm_iio_triggered_buffer_setup(&client->dev, indio_dev, NULL, in max1363_probe()
1657 if (client->irq) { in max1363_probe()
1658 ret = devm_request_threaded_irq(&client->dev, st->client->irq, in max1363_probe()
1669 return devm_iio_device_register(&client->dev, indio_dev); in max1363_probe()